Genetic diversity and population structure of white-lipped peccaries (Tayassu pecari) in the Pantanal, Cerrado and Atlantic Forest from Brazil

Maciel, Fernanda de Góes; Rufo, Danilo Aqueu; Keuroghlian, Alexine; Russo, Anna Carolina; Brandt, Nathalia Moreschi; Vieira, Nataly Fernandes; Nóbrega, Bruna Moura da; Nava, Alessandra; Nardi, Marcello Schiavo; Jácomo, Anah Tereza de Almeida; Silveira, Leandro; Furtado, Mariana Malzoni; Tôrres, Natália Mundim; Miyaki, Cristina Yumi; Tambosi, Leandro Reverberi; Biondo, Cibele

doi:10.1016/j.mambio.2019.03.001

Cited by 8 publications

(6 citation statements)

References 55 publications

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“…We genotyped samples using 13 microsatellite loci, as outlined by Maciel et al (2019). Their analysis confirmed that the herds under study constituted a single genetic population, with a low FST value of 0.03 ± 0.01.…”

Section: Methodsmentioning

confidence: 62%

“…An analysis of WLP populations across Brazil, including Cerrado, Atlantic Forest, and Pantanal areas, reveals that isolation by distance occurs at distances greater than 180 km (Maciel et al, 2019). It is known that the presence of an agricultural matrix can impede the movement of herds at a landscape scale, requiring well-connected habitats for viable populations to persist (Jorge et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…We collected samples from 179 adult individuals at 51 sampling points across nine localities (Figure 1). We followed the capture and blood sampling methods described by Maciel et al (2019). To avoid spatial autocorrelation, we grouped sampling points within a 12 km radius, exceeding the genetic neighborhood size of approximately 6.5 km (Baptista et al, in prep.).…”

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confidence: 99%

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Agriculturally developed areas reduce genetic connectivity for a keystone neotropical ungulate

Baptista,

Keuroghlian,

Tambosi

et al. 2024

Preprint

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Modified landscapes can restrict the movement of organisms, leading to isolation and reduced population viability, particularly for species with extensive home ranges and long-distance travel, such as white-lipped peccaries (WLPs,Tayassu pecari). Previous studies have indicated that forested areas favor WLP herd movements, but the impact of the non-forested areas on their genetic connectivity is unknown. In this study, we used land cover, the Brazilian Roads Map, and population genetic data to investigate the impact of non-forested matrices on WLP’s genetic connectivity in the Pantanal floodplain and surrounding Cerrado plateau of central-west Brazil. We compared isolation-by-distance (IBD), isolation-by-barrier, and isolation-by-resistance models and tested 39 hypotheses within a modeling framework. Finally, we identified the optimal areas for ecological corridors based on the most effective landscape model. Barrier and landscape resistance were more strongly correlated with genetic relatedness than the IBD model. The model that received the most robust support considered only forest as habitat. All other classes formed a matrix that impeded gene flow, including agriculture, grassland, savannah, and paved and unpaved roads. WLP herds living in landscapes with reduced forest cover are more vulnerable to the effects of genetic isolation. To maintain gene flow, it is essential to establish connections between habitats throughout the landscape. Conservation programs should prioritize strategies that strengthen connections between habitats, including facilitating wildlife road-crossing structures and creating/restoring ecological corridors to link isolated habitat fragments.

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Section: Methodsmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Agriculturally developed areas reduce genetic connectivity for a keystone neotropical ungulate

Baptista,

Keuroghlian,

Tambosi

et al. 2024

Preprint

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“…One of the vulnerable species in the list-Myermecophaga triadctila-has its road-kill records mainly related to mosaics of pasture and forest [62] and also to proximity to urban areas [66], which are common landscapes across the country, increasing the risks for the species. Tayassu pecari is a species with a large distribution on Brazilian territory, which lives in large groups, but it is known that the species is much more abundant in the north and midwest than in other regions [67]. The highest road-kill rates for this species may be in these locations, which are less studied than the south and southeast areas.…”

Section: Discussionmentioning

confidence: 99%

How Many Mammals Are Killed on Brazilian Roads? Assessing Impacts and Conservation Implications

et al. 2022

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Millions of animals are killed on roads annually due to collisions with vehicles, particularly medium–large mammals. Studies on mammal road-kill flourished in Brazil in the last decade and an assessment of research on road-kill impacts at a country level will help define science-based conservation strategies. In this study, we used the compiled scientific literature to provide the state of knowledge on medium and large-sized mammals killed by road traffic in Brazil, their conservation status, and an approximation of the road-kill magnitude. We reviewed a total of 62 scientific papers that reported road-kill data accounting for 11.817 individuals. Of the 102 species of medium–large mammals found in the IUCN list, more than half (n = 62; 61%) were recorded as road-kill on Brazilian roads. The Carnivora order comprises over a quarter (n = 23; 37%) of the total road-killed species. A total of 9 species (14.5%) were classified as threatened, with a further 10 (16%) as Near Threatened. Over half of the road-killed species (n = 33, 53%) showed declining population trends according to their IUCN conservation status. Our extrapolation of the results for the entire Brazilian paved road network showed that the number of medium–large road-killed mammals can reach almost 9 million yearly (maximum 8.7 million; mean 1.3 million), representing a biomass of more than 10000 tons. The highest roadkill rates were recorded for common generalists and least concern species, although there were also threatened and near threatened species within the top 15 highest road-kill rates. The declining population trends found for most species reflect serious conservation concerns, since there is a lack of information on the mortality effects at population levels. Our results suggest that medium–large mammals are severally affected by road mortality in Brazil. More investigations are needed at local and abundance population levels, in a way that allows the inclusion of road network as an important threat for target species impacted by road-kill in the national territory, in order to develop adequate plans to mitigate those impacts.

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“…By using microsatellite markers, genetic structure of Agu pigs has been elucidated along with its correlation with Ryukyu wild boar, two Chinese breeds and five European breeds (Touma et al 2019 ). Similarly, De Góes Maciel et al ( 2019 ) analyzed 13 microsatellite loci of 361 white-lipped peccaries for assessment of their population structure and level of genetic diversity (Table 3 , Fig. 2E ).…”

Section: Techniques For Identification and Genetic Conservation Of Sp...mentioning

confidence: 99%

An overview of remote monitoring methods in biodiversity conservation

Kerry

Montalbo

Das

et al. 2022

Environ Sci Pollut Res

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Conservation of biodiversity is critical for the coexistence of humans and the sustenance of other living organisms within the ecosystem. Identification and prioritization of specific regions to be conserved are impossible without proper information about the sites. Advanced monitoring agencies like the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) had accredited that the sum total of species that are now threatened with extinction is higher than ever before in the past and are progressing toward extinct at an alarming rate. Besides this, the conceptualized global responses to these crises are still inadequate and entail drastic changes. Therefore, more sophisticated monitoring and conservation techniques are required which can simultaneously cover a larger surface area within a stipulated time frame and gather a large pool of data. Hence, this study is an overview of remote monitoring methods in biodiversity conservation via a survey of evidence-based reviews and related studies, wherein the description of the application of some technology for biodiversity conservation and monitoring is highlighted. Finally, the paper also describes various transformative smart technologies like artificial intelligence (AI) and/or machine learning algorithms for enhanced working efficiency of currently available techniques that will aid remote monitoring methods in biodiversity conservation.

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Genetic diversity and population structure of white-lipped peccaries (Tayassu pecari) in the Pantanal, Cerrado and Atlantic Forest from Brazil

Cited by 8 publications

References 55 publications

Agriculturally developed areas reduce genetic connectivity for a keystone neotropical ungulate

Agriculturally developed areas reduce genetic connectivity for a keystone neotropical ungulate

How Many Mammals Are Killed on Brazilian Roads? Assessing Impacts and Conservation Implications

An overview of remote monitoring methods in biodiversity conservation

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